Flue-liner drain



Jan. 8, 1946.

E. BERNDT FLUE-LINER DRAIN Filed Malrch 17, 1945 Patented Jan. 8, 1946apaaaai Application March 17, 1945,

1 Claim.

This invention relates to the construction of flueor chimney-liners ofthe type which have been found essential to protect the masonry againstexcessive condensation which takes place in the flue or chimney,particularly when used for as-fired boilers or furnaces. In situationswhere such'excessive condensation takes place in the flue or chimney themasonry deteriorates, sometimes quite rapidly, often causing damage tothe interior of the house. The mortar between the bricks, beingespecially vulnerable to such flue or chimney condensation tends todisintegrate. Allowed to continue unchecked a hazardous condition of theflue or chimney above the roof may result. Below the roof, thedisintegrating mortar permits a seepage through into the interiorplastered walls and ceilings.

Heretofore it has been a practice to protect fines or chimneys byinstalling a liner. At the lower end the liner has to be provided with apipe to drain off the condensation into the house sewer. However, suchconstructions have afforded no protection against the clogging of thedrain by the accumulation of soot, leaves, and twigs in the bottom ofthe flue-liner, neither have they allowed for easy repair or replacementof the drain, nor have they permitted a ready inspection of the drain orthe flue-liner itself, to determine conditions thereof.

The main objects of this invention, therefore, are to provide animproved form of flueor chimney-liner construction which locates thedrainage connection entirely outside the flue or chimney where it isaccessible for convenient attachment of the drain pipe and a subsequentinspection and repair as occasion may require; to provide an improvedconstruction of a flue-liner drain of this kind adapted for attachmentto the end of a flue-liner section extending to the exterior of theflue; to provide a flue-liner drain with a removable part which willpermit inspection of the drain outlet and the flue-liner and allow for aremoval of accumulations in the flueliner; and to provide a device ofthis kind which is simple and economical to manufacture, easy ofattachment, and permanently effective in its functioning.

In the accompanying drawing-- Figure 1 is a cross-sectional view of aflue equipped with a flue-liner, at the lower end of which is attached aflue-liner drain constituting a preferred embodiment of this invention;

Figure 3 is a fragmentary detail taken in the line 33 of Figure 2.

The drawings show a flue or chimney 4, of conventional construction,wherein has been arranged a flue-liner 5. Near the lower end of theliner is a branch 6, for connection with the moke outlet of the mainheating plant, and a second branch 1 for connection of an auxiliary hotwater, heater.

A flue-diner drain 8 embodying this invention and formed with a sump ordrain pocket 9 and equipped with an inspection door In is secured to theouter end of the horizontal flue-liner section II.

In the form herein shown the flue-liner drain is a, cast aluminumsleeve. Although such a casting is preferred, the flue-liner drain couldbe formed of sheet metal if desired. The axis of the sleeve is set at aslight angle so that when telescopicall connected with the section II itconforms to the slant thereof and the drain pocket 9 is approximatelyvertical.

As is evident from the drawing, the pocket 9 is in the nature of anextension formed near the outer end of the sleeve 8. The flat bottom I!is offset radially from the circumference of the sleeve and with theclosely-spaced parallel vertical side walls l3 and the moredistantly-spaced vertical end walls It, constitutes a narrow, elongatedpocket of U-shaped cross section both in the direction of the axis ofthe sleeve 8 and transversely thereto.

inverted U-shaped screen I! is fitted into the.

pocket 9. A grip I8 is suitably secured thereto by means of nuts [9 sothat the screen may be easily removed and replaced.

The inspectiondoor ID has a lug 20 formed on the lower end which fitsover the upper end of the outer side wall 13 of the pocket -9 and in away serves to hinge the door on the sleeve 8. At' its upper end, thedoor is provided with an apertured lug 2| registering with asimilarlyapertured lug 22 on the adjacent part of the sleeve '8. A bolt23 extends through the registering apertures'in the lugs 2| and 22 andaccommodates a wing nut 24 by which the door In is secured in place.

An arrangement of a flue-drain in accordance with this invention permitsthe condensation formed in the flue-liner 5 to be readily drained intothe house sewer, thereby precluding the possibility of any accumulationsof moisture in or at the bottom of the flue-liner. If any leaves ortwigs or other foreign matter finds its way into the flue-liner, theywill gravitate toward the pocket 9 of the flue drain where they will becaught by the screen [1 so as'to preclude the possibility of cloggingthe dra'n pipe 16. 7

As o a n si 'i t d b 1 very easily -rerhovedy-not only to permit"airlinspection of the condition around the drain pocket 9, but ifnecessary remove any accumulation To facilitate this the screen I! maybe taken out, cleaned; and" replaced. Such removal of the doorl llltzperxnits a'mirror to be inserted for the purpose of examine ofmaterial around the screen H.

ing the condition of the vertical flue-liner 5.

Variations and modifications in the details of structure and arrangementof the parts may be resorted to within the spirit and coverage of theappended claim.

I claim: V e r r 'A combination flue-liner drain and inspection unitcomprising an angular tubular member having one end thereof adapted fortelescopic attachment to a flue liner and the other end projectingoutwardly and downwardly exteriorly of sanguine closure platetremov'ably{secured to said "other'end ofsaid member to l ermit inspection of saidflue liner when said plate is removed,

a condensation sump formed in said member below said'plate to receivecondensation from said tubular'member, and a connection to said sump fortheat'tachment of a'drain pipe.

EDWARD BERNDT.

